Hello,Community
I did some tests as bellow.
1)TEST1:
I startup i.MX6DLSabreauto with BSP3.14.52 and use HDMI as display.
Then I set the passive point of thermal to 65 degree(default is 85),and then I startup /opt/viv_samples/vdk/tutorial3 to make SoC in heavy loading.
When temperature of SoC reached 65 degree, kernel output logs as bellow:
System is too hot. GPU3D will work at 1/64 clock.
imx-ipuv3 2400000.ipu: IPU Warning - IPU_INT_STAT_10 = 0x00100000
imx-ipuv3 2400000.ipu: IPU Warning - IPU_INT_STAT_5 = 0x00800000
and the HDMI became to display nothing.
2)TEST2
Use LVDS as display,the other steps are the same as TEST1.
When temperature of SoC reached 65 degree, kernel output logs as bellow:
System is too hot. GPU3D will work at 1/64 clock.
and the LVDS still works normally.
3)TEST3
Use BSP3.0.35_4.1.0, the other steps are the same as TEST1.
When temperature of SoC reached 65 degree, GPU3D will work at 1/64 clock.
And HDMI still works normally.
So please tell me the reason of the abnormal result in TEST1.
Hi Zongbiao
latest releases implemented ARM845369 which may lead
to performance drop, one can check
i.MX6SX: ARM_ERRATA_845369 applied?
Best regards
igor
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Hi igor
Thank you for you reply.
I commented out #define CONFIG_ARM_ERRATA_845369 in u-boot, and rebuilt the u-boot,but got the same result.
Best Regards,
ZongbiaoLiao
Hi ZongbiaoLiao
one can debug it using memory profiling tool
included in imx-test package (mmdc folder),
www.nxp.com/lgfiles/NMG/MAD/YOCTO/imx-test-5.4.tar.gz
described in sect.44.7 MMDC Profiling i.MX6DQ RM.
~igor